Influence of TiO2/Sb2O3 ratio on ZnO varistor ceramics

被引：47

作者：

Zhang, CC ^{[1
]}

Hu, YX ^{[1
]}

Lu, WZ ^{[1
]}

Cao, MH ^{[1
]}

Zhou, DX ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Solid State Elect, Wuhan 430074, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2002年 / 22卷 / 01期

关键词：

ceramics; degradation; grain-boundary; varistors; ZnO;

D O I：

10.1016/S0955-2219(01)00232-1

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of TiO2/Sb2O3 (Ti/Sb) ratio on the microstructure development and electrical properties of varistor ceramics in ZnO-(Bi2O3-TiO2-Sb2O3)-CoO-MnO2 system was investigated. Characterization of varistors was performed by XRD, SEM, d.c. degradation behavior, and electrical measurements. It is found that the Ti/Sb ratio greatly influences the microstructure and electrical properties of the ZnO varistor. The specimen with Ti/Sb ratio of 5 has the lowest breakdown field (20V/mm) and improved d.c. degradation behavior. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：61 / 65

页数：5

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